Grain-drier.



L. 0. KISE R. GRAIN DRI ER. APPLICATION FILED SE PT. 4, 1909.

954,033, Patented Apr. 5, 1910.

WfT/VESSES: 7

by I a 2 I M A TTORNEY.

UNITED I sTArEs PATENT oFFIoE."

LEWISB. KISER, F DECATUR, ILLINOIS, ASSIGNOR OF ONE-HALF TO JGSEPH STOCKS,

'. OF LAKE CITY, ILLINOIS.

GRAIN-DRIER.

Specification of Letters Patent.

Application filed. September 4, 1909. Serial No. 516,292.

To all whom itmay concern:

Be it known that I, Lnwrs C. Krsnn, citizen of the United States, residing at Decatur, 1n the county of Macon and .State of Illinois, have invented certain new and useful Improvements in Grain-Briers, of which the followin is a full, clear, and exact de-,

scription, re erence being had to the accompanying drawings, forming a part hereof.

My invention has relation to improvements in grain-driers; and it consists in the novel construction and arrangement of parts more fully set forth in the specification and pointed out in the claims.

In the drawings, Figure 1 is a middle ver-- tieallongitudinal. section of the apparatus,

on the line 1-1 of Fig. 2; and Fig. 2 is an end elevation, parts'being broken away.

The object of my invention is to construct an apparatus for the drying and subsequent cooling of grain, and similar substances, the entire process being accomplished virtually in a single chamber traversed by hot and cold air currents respectively. The sources of these currents are immaterial, any means known to the art being employed to heat the hot air currents, and to cool the cold air, and since the present invention is not concerned with the character of heating and cooling means, no illustration thereof is here attempted. The advantages of the present invention will be more fully apparent from a iletailed description thereof, which is as folows:

Referring to the drawings, C, represents a box or casing provided witha centrally disposed horizontal partition wall 1 which r .wraps of the conveyor as shown.

terminates a. short distance from the rear end wall of the casing. The partition thus divides the chamber of the easing into two superposed compartments a, Z), between which inter-communication is established through the passage 0 formedbetween. the end of the partition 1 and the rear vertical wall of the casing. Mounted in the u er or drying compartment a above the partition 1 is a hollow shaft 2 provided with a spiral conveyer 3, the shaft being provided with perforations or openings 0 between the At the bottom ofthe cooling compartment b is mounted a similar hollow shaft 2 provided with a reversely wrapped spiral conveyor 3', this shaft likewise having air escape openings or perforations 0. The rear ends of Patented Apr. 5, 1910;

open ends of the respective shafts passing.

through stufling-boxes S, S as shown. The

intake of the shaft 2 communicates with the elbow 5 at the end of the hot-air pipe 6, the corresponding end of the shaft 2. communicating with the elbow 5 of the cold-air supply pipe 6. The hot-air pipe is provided with a thermometer T. The casing C is provided with an intake-mouth 7 for the grain, at the front end, or the end adjacent to the pipes 6, 6 and with a discharge mouth or pipe 8 opposite'the intake 7, and with an upper rear gas and steam escape flue 9 which may be closed by a valve or hinged flap 10.

In the operation of the drier, the grain is charged into the compartment a through the inlet or feed mouth 7 dropping down on the partition 1, along which 1t is gradually conveyed by the spiral conveyor 3 of the rotating shaft 2, the latter being operated from its belt pulley P as shown. When the grain reaches the opening or passage 0, it drops therethrough to the bottom of the cold-air con'ipartn'lent 6, being then advanced by the spiral conveyor 3 toward the discharge.

opening or mouth 8. The grain while traversing the upper compartment a is subjected to the action of the jets of hot air, which is driven under pressure from the pipe 6 into the hollow shaft2, and escapes. through the openings 0 penetrating the grain the latter drying under its influence, the steam and gases being either allowed to escape freely through the flue 9 by opening the valve 10, or be temporarily held back against such escape byclosing and weightmg down said valve. V

YVhen the dried grain has dropped into the compartment 7), and while being advanced toward the discharge mouth 8 by the spiral conveyor 3, it is subjected to the cooling action of the cold-air ets issuing from the openings 0 of the hollow-shaft 2, the air being supplied theretounder pressure from the cold-air supply pipe 6'. Thus the grain (or other substance) is first dried and then delivered cool, when it is ready for any subsequent treatment to which it may be subjected.

Having described my invention, what I claim is a 1. A grain drier comprising a casing having'an inletand a discharge opening opposite thereto at one end of the casing, a partition wall between said inlet and discharge openings dividing the chamber into an upper and lower compartment having intercommunication at the end of the casing opposite the inlet and discharge openings aforesaid, a spiral conveyer in the upper compartment for advancing the material from the inlet end of the casing to the opening between the compartments at the opposite end of the casing, means for delivering currents of heated air through the material during its passage through the upper compartment, a spiral conveyer in the lower compartment for advancing the material to the discharge opening of the casing, and means for delivering currents of cold air through the material while being advanced through the lower compartment.

2. A grain drier comprising a casing having superposed intercommunicating compartments, the upper compartment having an inlet. opening at the top of the casing from the inlet through the upper compart-- ment to the opening between the compartments Where the material drops into the lower compartment, then advancing the material through the lower compartment to the discharge being perforated, and means for conducting hot air under pressure into the upper shaft for drying the material in the upper compartment, and for conducting cold air to the lower shaft whereby the material is cooled by the currents projected through the perforations.

In testimony whereof I aflix my signature, in presence of two witnesses.

LEWIS C. KISER. Witnesses:

E. BLANGHE FrrzwA'rER, C. J. HARTLEY.

opening, the walls of the shafts 

